<!DOCTYPE html>
<html lang="en">

<head>
	<meta charset="UTF-8">
	<title>01</title>
</head>

<body>
	<div></div>
	<script>
		var obj = { name: "zs" }
		function foo(obj) {
			obj.name = "lll"
			obj = { name: "zs" }
		}
		foo(obj)
		console.log(obj.name)  // lll

		console.log([] == ![]) // true
		console.log({} == !{}) // false
	</script>
</body>

</html>